Results 171 to 180 of about 191,928 (208)
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Spark detectors for charged particles
Uspekhi Fizicheskih Nauk, 1963INTRODUCTION I. Spark Counters 429 1. General Description of Spark Counters 429 2. Counting Characteristic 429 3. Counter Efficiency 431 4. Time Characteristics of Counters 431 5. Accuracy of Particle Trajectory Coordinate Measurement 432 II. Triggered Spark Counters 435 6. Operating Principle of Triggered Spark Counters 435 7.
M I Daĭon, G A Leksin
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Confinement of massless charged particles in QED4 and of charged particles in QED3
Annals of Physics, 1986Abstract The infrared problem associated with massless charged particles is discussed at a non-perturbative level, extending previous results. It is shown that the validity of the relativistic spectral conditions and the existence of asymptotic photons forbid the existence of massless charged particles.
G Morchio, F Strocchi
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Casimir effects for charged particles
Physical Review B, 1990Etude des forces de Casimir sur des particules ayant une charge nette. On donne des exemples du cas des particules chargees. On explore des methodes pour traiter les «divergences» des photons infra-rouge qui naissent du relâchement avec laquelle une particule chargee acceleree emet une ...
, Panella, , Widom, , Srivastava
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Charged-Particle Radiosurgery of the Brain
Neurosurgery Clinics of North America, 1990Charged-particle beams (e.g., protons and helium, carbon and neon ions) manifest unique physical properties which offer advantages for neurosurgery and neuroscience research. The beams have Bragg ionization peaks at depth in tissues, and finite range and are readily collimated to any desired cross-sectional size and shape by metal apertures. Since 1954
R P, Levy +4 more
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2000
Abstract Since Maxwell’s equations are linear in q and j, solutions corresponding to several point charges, all at rest, are obtained by superposing the solutions (14.1)-(14.2). Usually, one simply adds up the V’s of (14.2)2, rather than the E’s of (14.1)2, because scalars are easier to add than vectors.
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Abstract Since Maxwell’s equations are linear in q and j, solutions corresponding to several point charges, all at rest, are obtained by superposing the solutions (14.1)-(14.2). Usually, one simply adds up the V’s of (14.2)2, rather than the E’s of (14.1)2, because scalars are easier to add than vectors.
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Radiation Therapy With Charged Particles
Seminars in Radiation Oncology, 2006Charged particle beams can offer an improved dose conformation to the target volume as compared with photon radiotherapy, with better sparing of normal tissue structures close to the target. In addition, beams of ions heavier than (4)He exhibit a strong increase of the linear energy transfer in the Bragg peak as compared with the entrance region. These
Daniela, Schulz-Ertner +2 more
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Science (New York, N.Y.), 2010
There was a complete absence of charged particles associated with the planet Venus at radial distances as small as 41,000 km on the sunward side of the planet. This result is taken to mean that the magnetosphere of Venus, if any, does not extend to that great a distance. The most plausible interpretation is that (MV/ME)
L A, Frank, J A, Van Allen, H K, Hills
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There was a complete absence of charged particles associated with the planet Venus at radial distances as small as 41,000 km on the sunward side of the planet. This result is taken to mean that the magnetosphere of Venus, if any, does not extend to that great a distance. The most plausible interpretation is that (MV/ME)
L A, Frank, J A, Van Allen, H K, Hills
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Electrophoresis of randomly charged particles
ELECTROPHORESIS, 2002The technique of "rotational electrophoresis" has been developed recently to measure the charge nonuniformity on Brownian particles in a suspension. Measurements of the angular velocity in electrophoresis are interpreted with electrokinetic theory to give a standard deviation of zeta potential among N regions on a particle.
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Relaxation of a system of charged particles
Physical Review A, 1985The relaxation of an isotropic approximately monoenergetic system of like particles through small-angle Coulomb collisions is followed numerically. It is found that when energy conservation is ensured, the results are qualitatively different from that of an earlier study [W. M. MacDonald, M. N. Rosenbluth, and Wong Chuck, Phys. Rev.
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Epicyclic Orbits of Charged Particles
American Journal of Physics, 1959In a uniform magnetic field and a central force of the form F = ξr, where ξ is a constant, charged particles describe epicyclic orbits in a plane perpendicular to the magnetic field for a limited range of ξ. These orbits are more varied than the simple trochoid which occurs when F is uniform.
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